Credentials In Files - Linux — Sigma Rule

Rule metadata and linked tags

Author: Igor Fits, oscd.community. Source status: test; severity: high. Source dates: 2020-10-15 / 2023-04-30.

{
  "product": "linux",
  "service": "auditd"
}

Pinned original Sigma rule · Detection Rule License 1.1

Source SHA-256: fcdff3b0e1b3be0c5d816b7601fe8b0da6a16b8468446145f6670b018027d1fa

Detection logic

Original source YAML. Source-tag agreement is not proof of complete semantic coverage. This rule has not been compiled for a SIEM backend or validated against live telemetry here.

title: Credentials In Files - Linux
id: df3fcaea-2715-4214-99c5-0056ea59eb35
status: test
description: 'Detecting attempts to extract passwords with grep'
references:
    - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1552.001/T1552.001.md
author: 'Igor Fits, oscd.community'
date: 2020-10-15
modified: 2023-04-30
tags:
    - attack.credential-access
    - attack.t1552.001
logsource:
    product: linux
    service: auditd
detection:
    selection:
        type: 'EXECVE'
    keywords:
        '|all':
            - 'grep'
            - 'password'
    condition: selection and keywords
falsepositives:
    - Unknown
level: high

Original YAML and metadata in JSON

False positives

• Unknown

Source references

• https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1552.001/T1552.001.md